Can we talk about the 5.0L water pump
#241
10-10-2018, 07:58 AM
Senior Member
Thanks Ngarara, it could be a totally different noise altogether. Showed the car to a friend at work earlier today and we noticed that the noise disappeared about 30 seconds after engine start. Maybe SAI? We took the car around the block and could both smell something "warm and sweet", a bit like someone was baking some sort of cake when we opened the bonnet afterwards.
I got a pile of service invoices etc. with the car, only really had a quick look at them at the weekend but I'll have a proper look this week. When I got the car home (from Southport, about 350 miles away) I had a good look over it and found the coolant level was a bit low, it took around 900ml to get it back to the MIN line on the tank. I didn't check at the time I collected the car so it could just be that it wasn't filled fully last time something was done that involved (partially) draining the coolant but given the warm antifreeze smell I do suspect a leak somewhere.
I got a pile of service invoices etc. with the car, only really had a quick look at them at the weekend but I'll have a proper look this week. When I got the car home (from Southport, about 350 miles away) I had a good look over it and found the coolant level was a bit low, it took around 900ml to get it back to the MIN line on the tank. I didn't check at the time I collected the car so it could just be that it wasn't filled fully last time something was done that involved (partially) draining the coolant but given the warm antifreeze smell I do suspect a leak somewhere.
#242
10-10-2018, 08:18 AM
From my experience the typical failure of a water pump is the seal. It usually starts to leak either by lack of use or material or shaft wear. The coolant then washes the bearing grease which will then destroy the bearing. The weep hole in the front of the WP housing helps to let small leaks drain aimed at saving the bearing. It extends the bearing life. Also at times during heat up the seal will expand and maintain a seal. So besides seeing a drop of coolant in the expansion tank the best inspection is to look under the front of the WP and see for signs of leakage out of the weep hole. On some cars this is easy but on the Jag due to packaging it is a difficult and timely check. So if you want to be safe then have it done. Just my 2 cents.
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8bit (10-12-2018)
#243
10-10-2018, 08:45 AM
Veteran Member
#244
10-11-2018, 07:50 AM
Member
Mine made a sh!tlo@d of noise!
See my earlier post in this thread, #202. Mine was so bad I told the wife to leave the car in the garage and take mine. Now, I don't know if it started out quietly and gradually got worse, because she drives the car daily and I don't see or hear what's happening, so this was most likely a problem that started a while back, and by luck I just happened to hear it before it left her on the side of the road. Anyway, replacing the pump is not a bad job, if you're handy with "spanners" (Brit joke). See my pictures on post #225, I did the repair back in July and so far, so good.
Rick
Rick
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8bit (10-12-2018)
#245
11-10-2018, 04:11 PM
5,0 super charged, is the water pump also a problem on the super charged engine ?
My 2009 xkr 5,0 s/c seems to be leaking from the water pump, only 20.000 miles...
#42
05-30-2014, 07:12 PM
u102768
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This is the text from one of the Jaguar technical bulletins on the 5.0L water pumps:
Cause: Coolant ingress into the bearing housing leads to corrosion of the bearing and incorrect support for the impeller shaft. This in turn causes accelerated wear of the mechanical flat face seal leading to coolant loss sufficient to generate a low coolant level warning message in the Instrument Pack display.
NOTE: The water pump can display some dry coolant residue on the pump body, and surrounding area, during normal operation. A small amount of coolant may temporarily weep through the pump seals or from the evaporation chamber. This does not affect the operation of the pump or the cooling system, and it does not damage the water pump. A small amount of dry coolant residue on the pump body, pulleys, belts, or around the front of the engine are not alone sufficient justification for changing a water pump.
Then there is SSM50177:
Issue: The Customer reports a low coolant message on the instrument pack display. A coolant leak is identified from the area around the coolant pump pulley. This affects 5.0L engines only on XJ, XF, XK.
Cause: Internal sealing failure.
Action: Revised water pumps are available to order through Unipart, part number C2D 20660.
u102768
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Quote:
Originally Posted by bocatrip
It seems from a pervious post that the part number for this revised water pump has been updated twice.
Yup, I was just quoting the SSM from 2011. The latest number is coming up as C2Z21781.
[/QUOTE]
#42
05-30-2014, 07:12 PMu102768
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This is the text from one of the Jaguar technical bulletins on the 5.0L water pumps:
Cause: Coolant ingress into the bearing housing leads to corrosion of the bearing and incorrect support for the impeller shaft. This in turn causes accelerated wear of the mechanical flat face seal leading to coolant loss sufficient to generate a low coolant level warning message in the Instrument Pack display.
NOTE: The water pump can display some dry coolant residue on the pump body, and surrounding area, during normal operation. A small amount of coolant may temporarily weep through the pump seals or from the evaporation chamber. This does not affect the operation of the pump or the cooling system, and it does not damage the water pump. A small amount of dry coolant residue on the pump body, pulleys, belts, or around the front of the engine are not alone sufficient justification for changing a water pump.
Then there is SSM50177:
Issue: The Customer reports a low coolant message on the instrument pack display. A coolant leak is identified from the area around the coolant pump pulley. This affects 5.0L engines only on XJ, XF, XK.
Cause: Internal sealing failure.
Action: Revised water pumps are available to order through Unipart, part number C2D 20660.
u102768
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Quote:
Originally Posted by bocatrip
It seems from a pervious post that the part number for this revised water pump has been updated twice.
Yup, I was just quoting the SSM from 2011. The latest number is coming up as C2Z21781.
[/QUOTE]
#246
11-10-2018, 04:37 PM
#247
11-10-2018, 07:08 PM
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Queen and Country (11-10-2018)
#248
11-10-2018, 07:50 PM
#249
11-11-2018, 08:54 AM
Veteran Member
Yes. All Jaguar and Land Rover 5.0L engines are affected, regardless of model, (XF, XJ, XK, etc.). For more details and a list of all the different OEM replacement part numbers, see: https://www.jaguarforums.com/forum/x...placed-132537/
#250
05-02-2019, 11:24 AM
My Turn; 2010 XFR 72,000 miles
My 2010 XFR finally gave me the official notification it was leaking antifreeze enough to prompt the low coolant indicator light to come on. I have had the car since new and never got this message, so I added coolant. A week later, the level dropped again so I knew the party was over. Two things that I noticed with my situation: 1) My car was out of warranty when I first smelled the faint smell of coolant, which I smelled for several years; I drove my car once or 2 X a week for mostly short trips and checked the reservoir religiously. At the first whiff, I inspected the water pump and hoses, including the weep hole and protective "tray" under the engine. No fluid whatsoever. Spoke to the dealer 4 years ago who confirmed the smell but couldn't find any evidence of a leak. Said preventative course of action would be to replace the water pump--given the history with 5.0L. I decided to wait at my own risk given low mileage driving etc. No problems but seal finally must have went and fluid evident in tray. FYI, lost at least half a gallon of fluid over two weeks of driving and ZERO drops on the garage floor or driveway; pan, wind and evaporation. $1600 OEM repair. Car is 10 years old and owes me nothing. My biggest gripe with the 2010 XFR is the leather dash. They do not hold up; even my second dash, replaced in 2014 is "bubbling." That and the Satellite radio presets disappearing are my biggest gripes. Only other repair I had to make was a passenger front wheel bearing.
#251
05-02-2019, 12:16 PM
Senior Member
#252
05-03-2019, 09:11 AM
Veteran Member
#254
07-07-2019, 05:01 PM
It’s a disgrace!
My 2011 XK noisily destroyed its water pump in Paris on our way home from a trip to Austria. First a “low coolant” warning and then a rattle to wake the dead and spray and steam everywhere. The car is still on its way back courtesy of RAC.
MY POINT is that it is a disgrace that after a century of water cooled ICE development a company like Jaguar cannot design a water pump immune to failure instead of one clearly demonstrated as prone to failure. I bet water pumps don’t fail in Challenger tanks.
SO I reckon Jaguar should at the very least supply the corrected replacement part free regardless of the warranty status and I intend to pursue this with JLR. The current part is clearly incompetent of design or manufacture.
MY POINT is that it is a disgrace that after a century of water cooled ICE development a company like Jaguar cannot design a water pump immune to failure instead of one clearly demonstrated as prone to failure. I bet water pumps don’t fail in Challenger tanks.
SO I reckon Jaguar should at the very least supply the corrected replacement part free regardless of the warranty status and I intend to pursue this with JLR. The current part is clearly incompetent of design or manufacture.
Last edited by Ernold; 07-07-2019 at 05:06 PM. Reason: Typo
#255
07-07-2019, 05:17 PM
Veteran Member
My 2011 XK noisily destroyed its water pump in Paris on our way home from a trip to Austria. First a “low coolant” warning and then a rattle to wake the dead and spray and steam everywhere. The car is still on its way back courtesy of RAC.
MY POINT is that it is a disgrace that after a century of water cooled ICE development a company like Jaguar cannot design a water pump immune to failure instead of one clearly demonstrated as prone to failure. I bet water pumps don’t fail in Challenger tanks.
SO I reckon Jaguar should at the very least supply the corrected replacement part free regardless of the warranty status and I intend to pursue this with JLR. The current part is clearly incompetent of design or manufacture.
MY POINT is that it is a disgrace that after a century of water cooled ICE development a company like Jaguar cannot design a water pump immune to failure instead of one clearly demonstrated as prone to failure. I bet water pumps don’t fail in Challenger tanks.
SO I reckon Jaguar should at the very least supply the corrected replacement part free regardless of the warranty status and I intend to pursue this with JLR. The current part is clearly incompetent of design or manufacture.
#256
08-25-2020, 03:07 AM
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I did not recognize until rereading elements of that antique thread that we are able to surely get a "low coolant" message. I notion we only get the "engine overheating" message. if you are planning to buy electric water heater message certainly comes on while it have to as a minimum we might have an option to right now stop before the engine is toast.
#257
06-15-2023, 04:14 PM
Veteran Member
For the second time I am now replacing my 5.0L XKR water pump. What I suspect was the original pump gave out at ~40K miles after ~ 7 years. The replacement lasted about 5 years and also only ~40K miles.
I was not driving the car particularly hard, but it was a very hot day. Luckily I spotted the "low coolant warning" message on the dash, and was able to very quickly park the car. It was down ~2 litres, so I topped it up with distilled water and let the engine cool down for ~2 hours before limping home ~10 miles. At home I checked it again and it needed another ~2 litres of water. I was then able to limp to my Indy mechanic ~ 5 miles, where-as by then, coolant was starting to spew out of the pump spraying all over the front of the engine.
Now ~$1,500 later the car is back on the road, luckily with no engine damage.
I was not driving the car particularly hard, but it was a very hot day. Luckily I spotted the "low coolant warning" message on the dash, and was able to very quickly park the car. It was down ~2 litres, so I topped it up with distilled water and let the engine cool down for ~2 hours before limping home ~10 miles. At home I checked it again and it needed another ~2 litres of water. I was then able to limp to my Indy mechanic ~ 5 miles, where-as by then, coolant was starting to spew out of the pump spraying all over the front of the engine.
Now ~$1,500 later the car is back on the road, luckily with no engine damage.
#258
06-15-2023, 10:35 PM
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#259
06-16-2023, 11:09 AM
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We don't hear much of the water pumps that remain working.
I had the small bleed tube, associated with the w/p, fail, so changed to the new bleed tube designlocation.
Wonder if the revised bleed has made a difference on w/p life?
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